Question: Which statement is not incorrect regarding the Cholinergic system? Need Assignment Help? Select one: a. Cholinergic synapses, meaning that the molecule released is norepinephrine b. Nicotine and muscarine molecules can bind to each other's receptors. . c. The nicotinic receptor is a ligand-gated cation channel and the muscarinic receptor is a G protein-coupled receptor. . d. Both nicotinic and muscarinic receptors can bind to the molecule norepinephrine.